r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 132

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

5. Exception Handling
5.6
The various exception handling operations explained here are exception sources, transition address
on the occurrence of exception, and processor operation when a transition is made.
5.6.1
(1)
• Condition:
• Operations:
(2)
• Condition:
• Operations:
(3)
• Source: SDIR.TI[7:4] = B'0110 (negation) or B'0111 (assertion)
• Transition address: H'A0000000
• Transition operations:
Rev.1.00 Jan. 10, 2008 Page 102 of 1658
REJ09B0261-0100
Power-on reset request
Exception code H'000 is set in EXPEVT, initialization of the CPU and on-chip peripheral
module is carried out, and then a branch is made to the reset vector (H'A0000000). For details,
see the register descriptions in the relevant sections. A power-on reset should be executed
when power is supplied.
Manual reset request
Exception code H'020 is set in EXPEVT, initialization of the CPU and on-chip peripheral
module is carried out, and then a branch is made to the branch vector (H'A0000000). The
registers initialized by a power-on reset and manual reset are different. For details, see the
register descriptions in the relevant sections.
Exception code H'000 is set in EXPEVT, initialization of VBR and SR is performed, and a
branch is made to PC = H'A0000000.
CPU and on-chip peripheral module initialization is performed. For details, see section 30,
User Debugging Interface (H-UDI), and the register descriptions in the relevant sections.
Power-On Reset
Manual Reset
H-UDI Reset
Description of Exceptions
Resets